Romney plays up S.C. issues in radio ad

1/6/12 12:18 PM EST

Mitt Romney's campaign is out with a new radio ad, "Free Enterprise," in South Carolina, featuring Gov. Nikki Haley and making a very state-specific argument about Boeing and the National Labor Relations Board.

“The National Labor Relations Board, now stacked with union stooges selected by the president, says to a free enterprise like Boeing, ‘You can’t build a factory in South Carolina because South Carolina is a right to work state,’" Romney says in the ad. "That is simply un-American. It is political payback of the worst kind.”